1 Combine all ingredients in a large enameled or stainless steel pot. 2 Bring to a healthy simmer, stirring occasionally. 3 You can cook this over low heat uncovered for about an hour, or cover it and cook it over very low heat for several hours. 4 The slow stewing method blends the flavors very nicely, and the caponata is great reheated. 5 Serve with garlic bread or croistini. 6 If you decide to freeze this, it will stay for 2 months.